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Switching from R-410A to R-454B: A Guide to Refrigerant Safety and Sustainability

As the world intensifies its fight against climate change, industries are urgently seeking sustainable solutions, and the HVAC industry is no exception. There is a rapid shift from harmful greenhouse gases like R-410A to more eco-friendly alternatives, notably R-454B. Navigating this paradigm shift may seem daunting, but we’ve created a comprehensive guide to help you through the complexities of refrigerant safety and sustainability. Read on to discover how this transition can simultaneously cool our homes and our planet—it’s cooler than you think!

Comparing R-410A and R-454B

With the growing demand for sustainable refrigerants, the shift from high-GWP refrigerants like R-410A to lower-GWP alternatives such as R-454B is gaining popularity, especially in residential properties. Understanding the differences between these two types is essential for making an informed decision on the best solution for your needs.

R-410A, a hydrofluorocarbon (HFC) blend of hydrogen, fluorine, and carbon, has been widely used in residential and commercial HVAC applications for over two decades. In contrast, R-454B is classified as an unsaturated HFC, a subcategory of A2L refrigerants, and is marketed under various trade names such as Opteon XL41 and Solstice L41y.

Key Differences and Similarities

The most significant difference between R-410A and R-454B is their Global Warming Potential (GWP). R-410A has a GWP of 2,088, whereas R-454B has a GWP of only 465, making it four times less potent.

PropertyR-410AR-454B
Global Warming Potential2,088465
Ozone Depletion Potential00
Flammability ClassificationNonflammableA2L
Safety ClassificationA1A2L

Both refrigerants have zero Ozone Depletion Potential (ODP), meaning they do not harm the ozone layer. However, R-454B’s A2L safety classification as a mildly flammable refrigerant requires special handling and installation considerations. R-454B functions better with POE oils in compressors, enhancing heat transfer efficiency and reducing mechanical stress due to lower discharge temperatures, leading to less wear and tear compared to R-410A.

Think of R-410A as a car with high fuel consumption, while R-454B is like an electric car with a more sustainable power source. Both serve their purposes well, but the latter has fewer environmental implications.

Environmental Impact

As the global focus on environmental issues sharpens, the HVAC industry is prioritizing sustainable practices. R-454B has been identified as a more environmentally friendly alternative to refrigerants like R-22 and R-410A, which are linked to negative effects on the ozone layer.

RefrigerantGlobal Warming PotentialOzone Depletion Potential
R-221,8100.055
R-410A2,0880
R-454B4660

R-454B significantly reduces GWP compared to options like R-410A, playing a crucial role in improving efficiency while reducing greenhouse gas emissions. However, switching to a new refrigerant involves potential risks during implementation and use, such as leaks or contamination, which necessitate proper selection and management.

Performance and Efficiency Improvements with R-454B

The demand for lower-emissions equipment has led to the development of more efficient cooling systems. R-454B has demonstrated comparable, and in some cases superior, energy efficiency compared to R-410A. Enhanced heat transfer, lower discharge temperature and pressure, and a higher coefficient of performance (COP) make R-454B well-suited for consumer needs while reducing utility bills.

Chemours’ testing revealed significant gains in efficiency levels, with an average 5% energy saving, allowing users to save money and reduce their carbon footprint. Although retrofitting older equipment may not always be feasible, experienced professionals can help identify the best scenarios for replacement or retrofits.

Understanding Dynamic Pressures and Temperatures

When transitioning from R-410A to R-454B, it’s crucial to understand dynamic pressures and temperatures. R-454B can operate at higher temperatures without breaking down into undesirable byproducts, but technicians must ensure that equipment can withstand these new levels when upgrading systems.

Safety and Compatibility: Precautions in the Switch

Switching from R-410A to R-454B involves understanding the specific characteristics and properties of the new refrigerant. Technical components may need adjustment, including solenoids, thermostats, expansion devices, and safety relief valves.

Technicians must ensure all equipment complies with safety standards for flammable refrigerants and follow proper disposal procedures for old refrigerants. Handling and storing R-454B requires sufficient precautions, such as using proper protective gear and ensuring adequate ventilation.

Installation and Reviews of R-454B

R-454B’s installation is straightforward, requiring only minor adjustments for components like oil separators, filter-driers, and compressors. Reviews from technicians who have used R-454B highlight improved energy efficiency and positive feedback on its installation process.

Technicians’ Feedback on R-454B

Technicians report that systems running on R-454B show improved energy efficiency and lower overall installation costs due to minimal retrofitting needs. Proper training and understanding of the hazards involved with flammable refrigerants ensure safety without compromising sustainability.

By adhering to these guidelines and procedures, the transition to R-454B can be seamless, leading to more sustainable and efficient cooling systems that benefit both the environment and consumers.

Additional Resources

Additional resources are available from Us and Trane. 

New Refrigerants are Coming – What You Need to Know

Understanding R-454B Refrigerant

R-22

R-410A

Global Warming Potential (GWP)

New Refrigerants are Coming – What You Need to Know

The HVAC industry is transitioning to new refrigerants as required by the American Innovation and Manufacturing Act of 2020. This legislation gradually phases out existing refrigerant classes and introduces new requirements for those used in air conditioners and heat pumps. The new refrigerants have a lower global warming potential than the current ones.

As part of this transition, the U.S. Environmental Protection Agency (EPA) has set specific dates for new equipment to use the new refrigerants, commonly referred to as A2Ls. Residential and light commercial air conditioners and heat pumps manufactured after January 1, 2025, must use these new refrigerants. Equipment produced before this date has a one-year grace period to be installed, with a final installation deadline of January 1, 2026.

For products not requiring field assembly, like window air conditioning units, the final sale date is set for three years after the manufacturing compliance date, making the deadline January 1, 2028, without a compliance date for installation. The EPA is also considering a one-year extension for Variable Refrigerant Flow (VRF) systems with capacities of 65,000 BTU/h (19 kW) or more.

Existing air conditioning and heat pump equipment is not subject to these new regulations and can continue to be used until the end of their lifecycle. Components used for servicing and repair are also exempt from these regulations. The supply of refrigerants like R-410A and R-134a for servicing needs will remain available even as production and imports decline over the next decade, similar to previous refrigerant transitions in the 1990s and early 2000s.

Differences with A2Ls

All refrigerants are classified by toxicity and flammability. A2L refrigerants retain the non-toxic classification of their predecessor (R-410A) but have been reclassified to Class 2L for lower flammability, compared to Class 1 (no flame propagation) for R-410A. This requires redesigning HVAC equipment, and it is crucial for home builders to plan for this transition, engage with suppliers and installers, and ensure an adequate supply of equipment to avoid bottlenecks and delays.

To address the increased flammability, equipment manufacturers are adding safety features, revising transportation and handling procedures, and updating installation instructions. Key mitigation measures include:

  1. Enhancing refrigerant line testing and requiring specific joint types and nail plates at framing members.
  2. Controlling refrigerant concentration in buildings to stay below flammability limits.

Manufacturers may also install leak detection sensors in air handlers, activate main fans to reduce refrigerant concentration, and use shut-off valves to limit refrigerant leaks. Systems without leak detection sensors will require careful sizing of refrigerant quantities to ensure safety.

Additional documentation requirements include permanent labels on equipment indicating the installer and refrigerant weight. The primary A2L refrigerants expected in the market are R-32 and R-454B, with each equipment manufacturer specifying their use.

Multifamily Buildings

For multifamily buildings, where refrigerant lines penetrate fire-rated floor assemblies, building codes may require refrigerant lines to be placed in fire-rated shafts or other fire safety measures. Developers should coordinate designs with their MEP firms, as shaft requirements can impact plan layouts and architectural designs.

Centrally Ducted Systems vs. Mini Splits

Different mitigation strategies will be specified for centrally ducted systems versus mini splits. Builders should consult their vendors and follow installation instructions to ensure all required safety measures are implemented to prevent exceeding refrigerant concentration limits in case of a leak.

Design Software

Software programs for sizing equipment and energy modeling should use updated specifications for new equipment with A2L refrigerants.

Actions for Home Builders

Home builders should have a transition plan that includes:

  • Coordinating a switch-over timeline with vendors and installers.
  • Ensuring a sufficient supply of existing equipment before the switch-over and new equipment afterward.
  • Collaborating with mechanical system designers (for multifamily buildings, evaluate the need for fire-rated shafts).
  • Ensuring HVAC contractors are knowledgeable about new installation requirements and safety measures.
  • Making sure installation instructions are available from manufacturers for specific units.
  • Coordinating among all parties involved and establishing a feedback loop.

Building Code Updates

Information about building code status regarding A2L refrigerants in each state can be found using the interactive map from the Air-Conditioning, Heating, and Refrigeration Institute (AHRI).

Additional Resources

Additional resources are available from Us and Trane.

Understanding R-454B Refrigerant

Switching from R-410A to R-454B: A Guide to Refrigerant Safety and Sustainability

R-22

R-410A

Global Warming Potential (GWP)

BUYING OR SELLING? HOW TO TRANSFER YOUR WARRANTY

BUYING OR SELLING? HOW TO TRANSFER YOUR WARRANTY

If buying or selling a home is in your near future, you might be interested to know that your Trane warranty could be eligible to be transferred to the new homeowner.

As a seller, this could be an attractive feature for someone who is looking to move into your home. As a buyer, you’ll want to make sure you ask about the status of the warranty, otherwise you could be missing out on many years of coverage.

Here are a few questions you’ll want to ask to see if you can transfer the warranty…

We want to ensure that our customers are aware of the warranty transfer process so that they are able to take full advantage of it’s availability.

HVAC Tips for New Homeowners

Just bought your new home? That is AMAZING! It doesn’t matter if this is your first or your fourth home purchase. What’s important is to be familiar with the units responsible for the comfort levels in your home. This is because those units will need to be maintained and possibly repaired down the road.

One of the features that attracted you to your new home is the HVAC system and as such you’ll want to maximize the unit’s life. Here are tips and tricks to ensure that your HVAC system is working optimally.

Register Your New HVAC System

I know moving into your new home is exciting, you have so much unpacking to do, then you just want to RELAX in your new home! We get it! But don’t rest on your new HVAC warranty, you have 60 days, from installation, to register it. So there is really no time to wait! Your new warranty covers the cost of parts that might fail due to manufacturer defect, but not the labor to repair them. Even more if you DON’T register your warranty!!!

If your HVAC System was installed by Ary Co – here is the quick link to register your warranty!

Recognize the Importance of Preventive Maintenance

When you rented, your landlord probably took care of HVAC maintenance tasks like replacing the air filter. They may or may not have foot the bill for thorough heating and cooling inspections.

Now that you’re in charge, you can give preventive maintenance the attention it deserves. First, prioritize these do-it-yourself HVAC maintenance tasks:

  • Change the air filter every 30 to 60 days.
  • Gently hose down the outdoor unit and trim back vegetation to improve airflow.
  • Keep all air registers open to maintain proper system balance.

Then, schedule your bi-annual maintenance for each HVAC unit. Only a trained professional can perform in-depth tasks, expect the following benefits when you hire a professional to inspect your system twice a year:

  • Energy savings
  • Fewer breakdowns
  • Lower repair bills
  • Improved home comfort
  • Longer system life span
  • Peace of mind

Watch for Signs of Trouble

Repairing and replacing the HVAC system is the homeowner’s job. Watch for these signs that it’s time to call a heating and cooling contractor:

Hire a Licensed Company

For all your HVAC needs, hire a trusted company. Don’t wait until your system needs repairs in order to search for a reliable service provider. Do some prior research and source for a good contractor. A good contractor should specialize in HVAC. The contractor should also have been in the business for a number of years, and be able to provide you with emergency services.

Ary Co is a reliable, and trusted contractor. For over 40 years we’ve been dedicatedly serving the residents of Wise and Montague County. For any inquiries or questions concerning your cooling and heating units, feel free to get in touch with us. We look forward to becoming your trusted HVAC specialist.

Keep Your Air Conditioning and Heating System Running Smoothly

Keep Your Air Conditioning and Heating System Running Smoothly

Regardless of what climate you live in, keeping your air conditioning and heating system running smoothly is critical. As with anything that contains moving parts, maintenance is very important. Imagine if you never changed the oil and oil filter in your car, things wouldn’t go well for long. Although your HVAC system doesn’t have oil to change like your car, there are many parts and components that will not last forever and keeping them in good condition is key to not having a system failure when you really need it working smoothly, like on a 100 degree day in the south or a sub-zero winter day in the north.

We’ll go over some of the easier tasks you can do yourself. We’ll also go over some that may require the use of a professional service company to complete.

Easier, Do-It-Yourself Type Tasks

Changing Your Air Filter

One of the easiest and most important things you can do to keep your system running smoothly is to change your air filter regularly. This might sound like a no-brainer, but it is easy to forget until it stops your system from working. We find it best to add a reminder to my phone for this or you can check it when you pay your mortgage or rent monthly. The more your system runs in the hotter and/or colder months, the more often the air filter will need to be changed. We have an article dedicated to this topic and you can read it the link below.

Air Filter Change Frequency

Keeping the Drain Line Cleared

Drain lines can be a big problem if they get clogged. Most systems have a drain safety switch to turn the system off if the drain line gets clogged, but some don’t. This can stop your system from working and create a costly service call. It can also cause a lot of water damage if the system doesn’t shut off. You can help avoid this by pouring a cup of vinegar or a store-bought AC Line cleaner into the drain line every couple of months.

Keep the Coils Clean

HVAC systems have two coils, one inside and one outside. The outside coil and unit should be kept free of any grass or shrubs growing around it. Keeping these trimmed to at least 12 inches away is a good rule of thumb. You can clean the outdoor coil if you wish but be careful as it is delicate and should be rinsed out with a gentle stream of water from the inside of the coil out. This will require removing the top of the unit after you disconnect the power for safety. The indoor coil is a bit trickier. This coil is not easy to access and should be cleaned by a professional. To keep this coil clean and avoid having it cleaned, you should replace your air filter often. When the filter gets too dirty, it will start to drawl air and dirt around the outside and this dirt collects on the indoor coil.

Keep the Units Clean

It’s a good idea to wipe down the indoor and outdoor units at least once a year. This will keep dirt and grime from building up on the outside. This build-up can cause premature deterioration of the metal and cause rust. It can be avoided by just keeping the units clean.

More Difficult Tasks Requiring a Professional

Indoor Coil Cleaning

As mentioned above, the indoor coil is difficult to access and should be handled by a professional. You can help avoid this costly process by keeping your air filter changed frequently. 

Dirty Blower Wheels

There is a blower wheel inside the indoor unit that moves the air through the system and your home. If this gets dirty it can greatly reduce the amount of air it can move. A layer of dust the thickness of a piece of paper can reduce the airflow by more than 20%. This process should be performed by a professional and involves removing the blower housing, removing the motor from the housing, and then removing the blower wheel so it can be cleaned. This is also a costly repair that can be avoided by changing your air filter frequently to not let dirt and dust bypass the filter and collect on the coil and blower wheel. 

Duct Cleaning

Having you HVAC ducts cleaned is something that is debatable. Many companies offer this service, and it can be expensive. The problem is, there are some types of ducts that should not be cleaned with a brush, which is how many companies accomplish this process. Many modern duct systems are constructed of flex-duct and fiberglass duct board. Fiberglass duct board can be easily damaged by this process and flexible duct can become fragile with age. From our experience, prevention is the best method to keep your whole home heating and cooling systems running smoothly and efficiently.

Ary Co has many options to help protect your investment and making sure it is at peak performance, especially when you need it the most. Summer is coming quick, make sure your prepared for the hottest days by getting your system checked and maintained regularly.

Ary Co Team HVAC & Electric

How to prepare your home for Spring

How to prepare your home for Spring

Introduction

It’s that time of year! The weather is warming up, Spring is in the air, and it’s time to start getting ready for the coming season. Here are some ideas on how to prepare your home for Spring.

Check your roof and your gutters

The rainy season is right around the corner, so now is a good time to check your roof to make sure all your shingles are still intact. This way, you can worry less about unexpected roof leaks in the coming months. If you have gutters, go ahead and check them while you’re up there. Make sure they are clean and clear of debris so they’re ready to direct the water away from your home. Taking care of this now will prevent costly repairs to your foundation.

Spruce up your landscape

Trim back any of the dead vegetation left over from winter and clear your yard of any debris so it is ready for seeding. Once the threat of your last frost is over, it’s time to get your garden started. Plant those seeds and bulbs!

Don’t forget to get that lawnmower ready, too. Sharpen your blades and remove any debris that are caked on from last year. Change the oil and get your gas or charge up those batteries if your mower is electric.

Clean your home’s exterior

Power or pressure wash your windows, exterior walls, vents, and driveway. Prepare your patio, clean your furniture, and get that grill ready for cooking!

Do some spring cleaning indoors

Spring cleaning is in the air! This is the time to do all the cleaning that you don’t typically do on a regular basis. Things like your baseboards, walls, doors, blinds, light fixtures, vents, and windows could all probably use a good wipe. Check out the items in your fridge and pantry, get rid of any unwanted items and scrub the spaces clean. Get rid of anything that’s cluttering your home. Clutter can bring stress into your life even if you don’t realize it. If you haven’t used it in the last year and you don’t have a specific plan for it, it’s probably safe to get rid of it.

Check your alarms and filters

Test those smoke, carbon monoxide and security alarms to assure they are in working order. Check for and replace any old batteries now to prevent them from going off unexpectedly. If you haven’t done it within the last month or so, go ahead and check your air filters and change them if necessary. They might be filled up from all that spring cleaning that you did!

Air Filter Changing Frequency

How often should I change my air filter?

This seems to be the most common question we are asked all the time. The simple answer is, “as often as they get dirty.”  Seems simple enough, right?  Let me further explain.  Every home or business is different and so is the climate we use them in.  Each one has different occupants and is used differently.  One home may have a family of four with a dog and a cat while another may have single occupant.  As you can imagine, the one with a family of four with pets should be changing their filters more often.  Why?  More people means more dust and pollutants and pets can multiply this several time over.  

For a business or office where clients and customers are coming in and out of the door all day long, will need to be changing their ai filters more frequently. Again, the best recommendation is to check your filters each month, because each change of season also brings its own pollutants.

Most of the time it is pretty obvious that an air filter is in need of replacing but here are some signs to look for that can tell you it’s time to change it:

Our best advice is to check it once a month when you pay your power bill seeing how your air filter has a direct impact on the performance of your heating and cooling system.  If it’s dirty go ahead and change it.  If not, check again in a week or two.  Once you do this, you’ll get a feel for how often the air filter in your own home should be changed.  

Ary Co offers monthly filter changing services for residential and commercial buildings We will come in, inspect, and set up a filter changing scheduled that is most convent for you and is optimal for your HVAC system performance.

What you need to know about using R-22 in HVAC systems

R-22 was the most popular refrigerant used in commercial and residential air conditioning units for many years because it was considered a safe and cost-efficient refrigerant choice by the HVACR industry. But as anyone in the industry knows, R-22 was phased out in the U.S. beginning in 2010 because it is ozone depleting.

Once the U.S. EPA began allocating and reducing available quantities of R-22, fear of shortages drove manufacturers, distributors and service companies to immediately stock up on as much R-22 as possible, causing price spikes.  However, as time passed, and availability continued, prices have stabilized.

EPA refrigerant phase-out regulations often have complex market impacts that can cause confusion.  The R-22 phase-out regulation ends new production and import of HCFC-22 as of January 1, 2020. After 2020, reclaimed R-22 can be used for service and maintenance for the life of the equipment.

The reclaim and recycling industry acted early to ensure adequate supply of R-22. Today hundreds of millions of pounds of R-22 are available in existing equipment. This will be adequate to ensure full lifetime service needs because a rooftop air conditioning unit lasts about 10 to 15 years and Trane, along with most other manufacturers, stopped producing commercial air conditioning units with R-22 in 2010. Now, eight years later, those units are expected to run for another 2 to 8 years, sustaining the supply for other equipment. Additionally, the accumulated R-22 stockpile and recycling and reclamation programs are extending availability. The bottom line is that the risk of R-22 demand exceeding supply is very low.

What should system owners do next?

Maintain your service and maintenance schedules for the expected life of the equipment. Proper maintenance helps prevent refrigerant leaks and, if a leak does happen, technicians will catch it early. Even if the price of R-22 climbs, the cost of replacing a few pounds will be relatively minor.

Owners who want to convert an R-22 system to a different refrigerant should proceed with extreme caution. Air conditioning units—Trane’s and everyone else’s—operate best with the refrigerant they were designed to use. An exact “drop-in” replacement alternative for R-22 does not exist, so changing refrigerant isn’t as simple as changing the oil in a car. It requires an engineered approach that evaluates the hardware, lubrication, refrigerant and controls to optimize performance. System efficiency losses and a voided warranty are some of the risks.

Maintaining an R-22 system for its anticipated life span is the safest way to maintain efficiency and your warranty.

Before making any decisions regarding refrigerant conversions or system upgrades, be sure to talk to someone who understands the complexities of the regulations and the pros and cons of next-generation refrigerants.

*Source https://www.trane.com/commercial/north-america/us/en/about-us/newsroom/blogs/what-to-know-about-r22-in-hvac-systems.html

Honor the Past. Celebrate the Present. Embrace the Future.

Ary Co's First Logo in 1982 - originally named A Ary Co

“Life can only be understood backwards; but it must be lived forwards.” ~Soren Kierkegaard

Some may have noticed the changes in our logo over the last couple years. We think it is important to share the evolution of our logo, branding, and company. We love to see progress, not only ours, but without our community. Small business owners grow and change as their interests and skills develop. For those of you who haven’t been following since 1982, we are sharing the early work.

But design isn’t the only development we have had, along with building a brand new facility, our business name holds even more history;

Ary Services

A Ary Co

A Ary Co A/C & Heat

Ary Air Conditioning

Ary Company AC & Heat

A Ary Co Heating & AC

Ary Co AC & Heat

A Ary Co. A/C & Heating

A Ary Co A C Heating

AC Service

Ary Co. AC & Heat

A Ary Co AC/ Heating

Ary Co’s

Ary Co A/C & Heat

Ary Co HVAC & Electric

ARYCO

Though not all of these names were from us, we still find value in the way our name has traveled and grown since 1982.

The Best in Every Aspect

At Ary Co A/C & Heat, we have been professionally providing the best in air conditioning and heating services for Wise County and surrounding areas for home and business owners since 1982. The company’s owner, Mark Ary, began his training at the age of 3. Mark mentored on the job site alongside his late father and founder of the company, Aboud Ary.

TAKING PRIDE AND GOING ABOVE AND BEYOND TO PROVIDE QUALITY SERVICE HAS BEEN A TRADITION FOR OVER 40 YEARS.

AryCo is committed to being the best in every aspect of their business. We take pride in all we do from Installation, Service, Customer Satisfaction, and Training. 

Aside from being fully licensed, bonded and insured, AryCo is a proud Trane Comfort Specialist, we has been recognized as a Reliable Top Contractor and earned an A+ Accredited Business raking with the Better Business Bureau. Above all else, AryCo makes it simple by adhering to a strict policy that promises 100% customer satisfaction.